Title：
Microplastics in surface waters and sediments of the Three Gorges Reservoir, China
Authors：
Corresponding
Author：
Mingxiao Di, Jun Wang*
Pubyear：
2018
Title of
Journal：
Science of The Total Environment
Paper
Code：
Volume：
616-617
Number：
Page：
1620-1627
Others：
Classification：
Source：
Abstract：
Deciphering ecological functions of alkaline phosphatase (phoD)-harboring bacteria in composting systems is crucial but poorly understood. High-throughput sequencing, gene quantification, and statistical analyses were applied to investigate effects of abundance and diversity of phoD-harboring bacteria (PHB) on phosphorus availability during swine manure composting. Results showed that available phosphorus notably increased from 0.5 to 1.43gkg-1, and physicochemical properties and enzyme activities affected PHB community composition. Phylogenetic signals of PHB responded notably to temperature and phosphorus components, and stochasticity (94.2%) dominated community assembly. Abundance and diversity of PHB directly and indirectly influenced phosphorus availability, and rare PHB mediated organic phosphorus mineralization. A phosphate-solubilizing bacterium (PSB) Pseudomonas sp. WWJ-22 isolated from compost displayed good efficiency in mineralizing lecithin, demonstrating the highest phosphorus-solubilizing level of 116.3mg L-1. This study highlights ecological roles of PHB on phosphorus availability and provides a potential PSB candidate for composting.
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